rtems_bsdnet_ifconfig problem using C++

Aitor.Viana.Sanchez at esa.int Aitor.Viana.Sanchez at esa.int
Mon Nov 12 13:39:10 UTC 2007

Hi all,

I got some problems with the network configuration when using C++. 

In the main.cpp source code I include:

#include <rtems.h>
#include <bsp.h>
#include "../rtems/rtems_config.h"

extern "C"
        #include <rtems/rtems_bsdnet.h>
#include "../rtems/rtems-network.h"

#include <rtems/rtems_bsdnet.h> is include within the extern statement 
because otherwise i cannot use the rtems_bsdnet_initialize_network() 
method. The rtems-network.h is the network configuration file (pretty 
similar to the one provided with the RTEMS examples) and also is working 
perfectly with previous C projects.
The problem is that when I try to compile the application i get the next 

/home/aitor/workspace/OBSFramework/src/rtems/rtems-network.h:97: invalid 
   conversion from `int (*)(rtems_bsdnet_ifconfig*)' to `int 
   (*)(rtems_bsdnet_ifconfig*, int)'

where the line referenced in the error is the next one

static struct rtems_bsdnet_ifconfig netdriver_config = {
        RTEMS_BSP_NETWORK_DRIVER_NAME,          /* name */
        RTEMS_BSP_NETWORK_DRIVER_ATTACH,        /* attach function */

        &loopback_config,               /* link to next interface */
        NULL,                           /* No more interfaces */

#if (defined (RTEMS_USE_BOOTP))
        NULL,                           /* BOOTP supplies IP address */
        NULL,                           /* BOOTP supplies IP net mask */
        "",         /* IP address */
        "",                /* IP net mask */
#endif /* !RTEMS_USE_BOOTP */

        ethernet_address,               /* Ethernet hardware address */
        NULL,                           /* Driver supplies hardware 
address */
        0                               /* Use default driver parameters 

I don't know why this is happening. Can anyone give a clue?

Thanks in advance,


Joel Sherrill <joel.sherrill at oarcorp.com> 
Sent by: rtems-users-bounces+aitor.viana.sanchez=esa.int at rtems.org
05/11/2007 15:18

Leon Pollak <leonp at plris.com>
RTEMS Users <rtems-users at rtems.org>
Re: TOD differences

Leon Pollak wrote:
> On Monday 05 November 2007 14:24, Joel Sherrill wrote:
>> Leon Pollak wrote:
>>> Hello, all.
>>> The question seems to be very simple, but I did not find any answer in
>>> docs, wiki...
>>> I have two rtems_time_of_day structures containing two times. How can 
>>> calculate the difference (in seconds) between them?
>> Not in the public API.  With the movement in 4.8 to struct timespec
>> in the super core, there are a lot of timespec math routines.  There
>> has always been some TOD to XXX routines.
>> I have considered making the existing set of time math routines
>> available via the public API.  It isn't especially hard to do but
>> would require documentation.  If this is of interest to the
>> community, I will move it from my idea list to my someday we might
>> do this list.
> Thanks, Joel.
> I definitely do not represent the community :-), but I vote "pro"!
> Meanwhile, can you be so kind to "disclose" where I can find any
> internal "TOD_to_XXX" routine?
Depends on the version.  For 4.7 and older, the routine
you want is _TOD_To_seconds() from the SuperCore.

For 4.8 and newer, it has the same name but is part
of the RTEMS Classic API since the SuperCore doesn't
know the Classic API TOD structure any more.

libbsp/shared/tod.c has an example of using it.

In 4.8 and newer, there is also a set of timespec math
routines prototyped in score/include/rtems/score/timespec.h

> Again, thanks.

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